Moxa Technologies NPort 1220 User manual

NPort 1220/1240 USB-to-Serial Hub
User’s Manual
Third Edition, November 2005
www.moxa.com/product
Moxa Technologies Co., Ltd.
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NPort 1220/1240 USB-to-Serial Hub
User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in
accordance with the terms of that agreement.
Copyright Notice
Copyright ©2005 Moxa Technologies Co., Ltd.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
MOXA is a registered trademark of the Moxa Group.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment on the
part of Moxa.
Moxa provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this
manual, or to the products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no
responsibility for its use, or for any infringements on the rights of third parties that may result from its use.
This manual might include unintentional technical or typographical errors. Changes are made periodically to the
information herein to correct such errors, and these changes are incorporated into new editions of the manual.

Table of Contents
Chapter 1 Introduction ..................................................................................... 1-1
Overview.................................................................................................1-2
Package Checklist ..................................................................................1-2
Product Features ....................................................................................1-2
Product Specifications ............................................................................1-3
NPort 1240......................................................................................1-3
NPort 1220......................................................................................1-4
Panel Layout...........................................................................................1-5
Dimensions .............................................................................................1-6
DIP Switch Settings ................................................................................1-7
Chapter 2 Driver Installation............................................................................ 2-1
Installing the Driver.................................................................................2-2
Checking the Installation ........................................................................2-9
Configuring the Ports............................................................................2-10
Windows 98 ..................................................................................2-10
Windows 2000/XP.........................................................................2-11
Uninstalling the Driver ..........................................................................2-12
Chapter 3 Serial Programming Tools.............................................................. 3-1
Overview.................................................................................................3-2
PComm Installation ................................................................................3-2
PComm Programming Library ................................................................3-2
Utilities ....................................................................................................3-2
Terminal Emulator ..................................................................................3-3
Appendix A Technical Reference .......................................................................A-1
Win32 API Function Compatible List..................................................... A-2
Windows 98 ................................................................................... A-2
Windows 2000/XP.......................................................................... A-3
General Technical Reference................................................................ A-4
Appendix B Service Information.........................................................................B-1
MOXA Internet Services ........................................................................ B-2
Problem Report Form ............................................................................ B-3
Product Return Procedure..................................................................... B-4

1
1
Chapter 1 Introduction
Welcome to MOXA NPort 1220/1240 USB-to-Serial Hub. NPort 1220 provides 2 RS-422/485
serial ports and NPort 1240 provides 4 RS-232 serial ports.
The following topics are covered in this chapter:
Overview
Package Checklist
Product Features
Product Specifications

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Overview
NPort 1200 Series USB to serial servers provide an extremely convenient means of connecting
serial devices to a PC. In fact, you don’t even need to power-down the PC. Just install the software
that comes with the product, and then connect your serial devices directly to the NPort.
NPort 1200 Series products are compliant with both USB 1.0 and 1.1 specifications, are
compatible with USB 2.0, and meet the 12 Mbps full speed requirement.
More and more peripherals are connected by the Ethernet or USB interface. The problem is how to
integrate these different interfaces. Today’s solution is to connect all devices using the open
standard Ethernet and USB. The total cost of ownership is reduced, not only in short term
hardware investment, but also in long term management and integrating cost.
The NPort 1200 Series supports both bus power and external power via an adapter. Bus power is
adapted for laptop or workstation connections that support 500 mA output for USB devices.
External power is adapted for those USB hubs that can only output 100 mA of current.
Package Checklist
MOXA NPort 1220/1240 products are shipped with the following items:
Standard Accessories
y1 NPort 1240 4-port USB to RS-232 HUB, or NPort 1220 2-port USB to RS-422/485 Hub
yNPort 1200 Series Document & Software CD
yNPort 1220/1240 Quick Installation Guide
yProduct Warranty Booklet
Optional Accessories
yDK-35A DIN-Rail Mounting Kit (35 mm)
yCB-USBAMB-1M USB A type to B type Cable, 1m
NOTE: Notify your sales representative if any of the above items is missing or damaged.
Product Features
NPort 1240 Series products enjoy the following features:
yExpand to 4 RS-232 ports (NPort 1240) or 2 RS-422/485 ports (NPort 1220) through USB
yHot plug and play
yNo additional I/O or IRQ required
yRS-232 (NPort 1240) and RS-422/485 (NPort 1220) speed up to 115.2 Kbps
ySupports USB 1.1, full rate speed up to 12 Mbps
yBuilt-in 16 KV ESD Surge Protection
ySupports Windows 98/ME/2000/XP drivers
ySupports both bus power and external power
yNPort 1220/1220I: Supports 4-wire RS-422/485 and 2-wire RS-485 applications
yNPort 1220I: Supports 2 KV Isolation Protection

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Product Specifications
NPort 1240
USB
Compliant with USB 1.1, 1.0
USB 2.0 backwards compatible
Connector USB type B
Speed Full speed 12 Mbps
Serial
No. of Ports 4
Interface RS-232: TxD, RxD, RTS, CTS, DTR, DSR, GND
Connector DB9 Male
FIFO 64 bytes
Serial line protection 16 KV ESD for all signals
Serial Communication Parameters
Parity None, Even, Odd
Data bits 7, 8
Stop bit 1, 2
Flow Control ADDC (Auto Data Direction Control)
Speed 600 to 115.2 Kbps
Power Requirements
Power Input 12 to 48 VDC (External) or 5 VDC (Bus power)
Power Consumption BUS: 172 mA @ 5 VDC
Ext. PWR: 117 mA @ 12 VDC
Mechanical Specifications
Material ABS
Gross Weight 220±5 g (0.48 lb)
Environmental
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 85°C (-4 to 185°F)
Operating Humidity 5 to 95% RH
Agency Approvals
EMC FCC (class B), CE (Class B)
Safety UL, CUL, TÜV
Warranty 5 years

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NPort 1220
USB
Compliant with USB 1.1, 1.0
USB 2.0 backwards compatible
Connector USB type B
Speed Full speed 12 Mbps
Serial
No. of Ports 2
Interface 4-wire RS-422: TxD+/-, RxD+/-, GND
4-wire RS-485: TxD+/-, RxD+/-, GND
2-wire RS-485: Data+/-, Data+/-, GND
Connector Terminal Block
FIFO 64 bytes
Serial line protection 16 KV ESD for all signals
Serial Communication Parameters
Parity None, Even, Odd
Data bits 7, 8
Stop bit 1, 2
Flow Control ADDC (Auto Data Direction Control)
Speed 600 to 115.2 Kbps
Power Requirements
Power Input 12 to 48 VDC (external) or 5 VDC (Bus power)
Power Consumption BUS: 140 mA @ 5 VDC
Ext. PWR: 306 mA @ 12 VDC
Mechanical Specifications
Material ABS
Gross Weight 215±5 g (0.48 lb)
Environmental
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 85°C (-4 to 185°F)
Operating Humidity 5 to 95% RH
Agency Approvals
EMC FCC (class B), CE (Class B)
Safety UL, CUL, TÜV
Warranty 5 years

NPort 1200/1240 User’s Manual Introduction
1-5
Panel Layout
ÅNPort 1240 Top Panel
ÅNPort 1220 Top Panel
ÅNPort 1240
serial interfaces
ÅNPort 1220
serial interfaces

NPort 1200/1240 User’s Manual Introduction
1-6
Dimensions
ÅNPort 1240
ÅNPort 1220

NPort 1200/1240 User’s Manual Introduction
1-7
DIP Switch Settings

2
2
Chapter 2 Driver Installation
This chapter includes information about installing the driver for NPort 1220/1240. We present the
installation procedure for both Windows 98 and Windows 2000 (the procedure for Windows XP is
essentially the same as for Windows 2000):
Installing the Driver
Checking the Installation
Comfiguring the Ports
¾Windows 98
¾Windows 2000/XP
Panel Layout
Uninstalling the Driver
NOTE For best results, we recommend that you install the USB driver for NPort 1220/1240 before
connecting the product to your computer’s USB port.
To do this, insert the software CD (included in the NPort 1220/1240 package) into your
computer’s CD drive, and click on Install Software.

NPort 1200/1240 User’s Manual Driver Installation
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Installing the Driver
1. Connect NPort 1220/1240’s USB Port to your computer’s USB port. Make sure NPort
1220/1240 and your computer is properly connected.
2. After you connect NPort 1220/1240 to your computer, a Found New Hardware window will
automatically open.
3. When the Found New Hardware Wizard starts up, click Next to continue installing the USB
driver.
4. The setup program will prompt you with an Install Hardaware Device Drivers window.
Select Search for a suitable driver for my device (recommended), and then click Next.

NPort 1200/1240 User’s Manual Driver Installation
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5. A window will open asking you where you want to locate the driver files. Check Specify a
location box, .and then click Next.
6. A window will open asking you to insert the installation disk. Insert the installation disk into
your CD drive,and then click Browse to locate the installation file.

NPort 1200/1240 User’s Manual Driver Installation
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7. Select klsibus.inf, and then click OPEN.
8. Click OK to continue.

NPort 1200/1240 User’s Manual Driver Installation
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9. A window will open showing the Driver Files Search Results. Click Next to install the
driver.
10. When the Completing the Found New Hardware Wizard window opens, click Finish to
close the wizard.

NPort 1200/1240 User’s Manual Driver Installation
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11. A welcome message will appear. Click Next to continue installing Moxa [Port 1].
12. A window will open asking you to insert the installation disk. Insert the installation disk into
your CD drive, and then click Browse to locate the installation file. Select klsiw2k.inf and
then click OPEN. Click OK to continue.

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13. A window will open showing the Driver Files Search Results. Click Next to install the
driver.
14. When Completing the Found New Hardware Wizard window opens, click Finish to close
this wizard.

NPort 1200/1240 User’s Manual Driver Installation
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NOTE If you wish to install the driver using “Install Driver” program, you will need to follow the
instructions below.
1. Insert the software CD (included in the NPort 1220/1240 package) into your computer’s CD
drive, and then click on Install Software.
2. When the Install Driver window opens, click on Install to install the driver files in the default
folder (C:\Program Files\Moxa USB to Serial\drivers), or click on Browse to select a different
folder.
3. Click OK to complete the installation.
4. Connect NPort 1220/1240’s USB port to your computer’s USB port. NPort 1220/1240’s serial
ports will be installed automatically.

NPort 1200/1240 User’s Manual Driver Installation
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Checking the Installation
You can check the installation of NPort 1220/1240 under your computer’s Device Manager
window. You should check under both Ports (COM & LPT) and Universal Serial Bus
controllers.
Windows 98
Windows 2000/XP
NOTE To double check that the driver and port installation is correct, unplug the NPort 1220/1240 from
your computer’s USB port—while the Device Manager window is open. The MOXA listings under
both Ports (COM & LPT) and Universal Serial Bus Controllers should disappear. Then replug
NPort 1220/1240 into your computer’s USB port, and the MOXA listings should reappear.

NPort 1200/1240 User’s Manual Driver Installation
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Configuring the Ports
Port configuration for NPort 1220/1240 differs slightly between Windows 98 and Windows
2000/XP. To modify the configuration for a particular port, double click on the listing for that port
under Ports (COM & LPT) in the Device Manager window.
Windows 98
Click on the Port Settings tab to change the Bits per second (data transmission speed), Data bits,
Parity, Stop bits, and Flow control.
Click on Advanced… to open the Advanced Port Settings to modify FIFO buffer settings.
NOTE Under Windows 98, you will not be able to change the COM port number for NPort 1220/1240’s
serial ports. You will need to use the default COM port number assigned by the OS after the ports
are installed.